Thermokarst dynamics and soil organic matter characteristics controlling initial carbon release from permafrost soils in the Siberian Yedoma region
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Thermokarst dynamics and soil organic matter characteristics controlling initial carbon release from permafrost soils in the Siberian Yedoma region. / Weiss, Niels; Blok, Daan; Elberling, Bo; Hugelius, Gustaf; Jørgensen, Christian Juncher; Siewert, Matthias; Kuhry, Peter.
In: Sedimentary Geology, 2016.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Thermokarst dynamics and soil organic matter characteristics controlling initial carbon release from permafrost soils in the Siberian Yedoma region
AU - Weiss, Niels
AU - Blok, Daan
AU - Elberling, Bo
AU - Hugelius, Gustaf
AU - Jørgensen, Christian Juncher
AU - Siewert, Matthias
AU - Kuhry, Peter
N1 - CENPERM[2016]
PY - 2016
Y1 - 2016
N2 - This study relates soil organic matter (SOM) characteristics to initial soil incubation carbon release from upper permafrost samples in Yedoma region soils of northeastern Siberia, Russia. Carbon (C) and nitrogen (N) content, carbon to nitrogen ratios (C:N), δ13C and δ15N values show clear trends that correspond with SOM age and degree of decomposition. Incubation results indicate that older and more decomposed soil material shows higher C respiration rates per unit incubated C than younger and less decomposed samples with higher C content. This is important as undecomposed material is often assumed to be more reactive upon thawing. Large stocks of SOM and their potential decomposability, in combination with complex landscapedynamics that include one or more events of Holocene thaw in most of the landscape, are of consequence for potential greenhouse gas release from permafrost soils in the Yedoma region.
AB - This study relates soil organic matter (SOM) characteristics to initial soil incubation carbon release from upper permafrost samples in Yedoma region soils of northeastern Siberia, Russia. Carbon (C) and nitrogen (N) content, carbon to nitrogen ratios (C:N), δ13C and δ15N values show clear trends that correspond with SOM age and degree of decomposition. Incubation results indicate that older and more decomposed soil material shows higher C respiration rates per unit incubated C than younger and less decomposed samples with higher C content. This is important as undecomposed material is often assumed to be more reactive upon thawing. Large stocks of SOM and their potential decomposability, in combination with complex landscapedynamics that include one or more events of Holocene thaw in most of the landscape, are of consequence for potential greenhouse gas release from permafrost soils in the Yedoma region.
U2 - 10.1016/j.sedgeo.2015.12.004
DO - 10.1016/j.sedgeo.2015.12.004
M3 - Journal article
JO - Sedimentary Geology
JF - Sedimentary Geology
SN - 0037-0738
ER -
ID: 152961759